我試圖用IDataObject把一些文本放到剪貼板。但GlobalUnlock失敗。我做錯了什麼?IDataobject-> SetData失敗
IDataObject *obj;
HRESULT ret;
assert(S_OK == OleGetClipboard(&obj));
FORMATETC fmtetc = {0};
fmtetc.cfFormat = CF_TEXT;
fmtetc.dwAspect = DVASPECT_CONTENT;
fmtetc.lindex = -1;
fmtetc.tymed = TYMED_HGLOBAL;
STGMEDIUM medium = {0};
medium.tymed = TYMED_HGLOBAL;
char* str = "string";
medium.hGlobal = GlobalAlloc(GMEM_MOVEABLE+GMEM_DDESHARE, strlen(str)+1);
char* pMem = (char*)GlobalLock(medium.hGlobal);
strcpy(pMem,str);
assert(GlobalUnlock(medium.hGlobal) != 0); // !!! ERROR
assert(S_OK == obj->SetData(&fmtetc,&medium,TRUE));
assert(S_OK == OleSetClipboard(obj));
那麼,當GlobalUnlock()失敗時,什麼是GetLastError()?另外,你確定GlobaAlloc()和GlobalLock()是否成功? – Luke 2010-04-22 17:18:22
GetLastError失敗時不包含任何信息。而且,alloc/lock沒有問題。 – trudger 2010-04-22 18:39:40